Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S166ADJUSTMENTItem ConditionMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Terminal Unit Parts Method4. MAIN VCO3lock voltage1) Main display f.: 3.300000MHzMode: USBDVM PLL(MAIN)M_CV PLL(MAIN)TC4 1.3V ±0.05V2) Main display f.:23.999990MHzCheck 11.2V or less5. MAIN VCO4lock voltage1) Main display f.: 4.500000MHzMode: USBPLL(MAIN)TC5 1.3V ±0.05V2) Main display f.:26.499990MHzCheck 11.2V or less6. SUB LO2level1) Menu No.: 0Mode: USBSpectrum analyzer settingCenter f.: 62.4MHzFrequency span : 1MHzDisconnect the cable fromCN65 and insert a cable fromthe spectrum analyzer.After the adjustment, connectthe cable to CN65.SpectrumanalyzerPLL(SUB)CN65(GR/BK)PLL(SUB)L71 Level max. –13dBm or more7. SUB REFlock voltage1) Sub display f.:14.100000MHzMode: FMSD_CV TC3 3.0V ±0.1V8. SUB LO1level1) Sub display f.: 1.900000MHzMode: USBSpectrum analyzer settingCenter f.: 13.274MHzFrequency span: 1MHzDisconnect the cable fromCN63 and insert a cable fromthe spectrum analyzer.CN63(BL/WH)L112L129L149Level max. –7dBm or more2) Sub display f.: 7.150000MHzMode: USBSpectrum analyzer settingCenter f.: 18.524MHzFrequency span: 1MHzAfter the adjustment, connectthe cable to CN63.L116L135L148Level max. –3dBm or more9. TX VCO1lock voltage1) Main display f.: 0.030000MHzMode : USB[TX] key selection: MainDVM PLL(SUB)S_CV PLL(SUB)TC1 1.5V ±0.05V* The TX VCO adjustment canbe adjusted in the state nottransmitted.2) Main display f.: 6.259990MHz Check 11.2V or less3) Main display f.: 6.260000MHz 1.0V~1.8V